Turn off axes completely

[Rob Bowman]

Hi,
I'm doing a surface plot to a PNG file and I only want to see the surface -
I don't want the axes to be drawn. I have been playing with this for ages
but can't figure it out - please help!

Thanks :)

[Stefan Nowy]

reset
unset border
unset xtics
unset ytics
plot x

HTH
Stefan

[Rob Bowman]

Thanks very much! unset border is what I was missing.

Incidentally, I am calling pgnuplot from c# .net code, here's how I did it,
in case this can be of help to anyone (there's not a lot of info around on
this):

string strDirTmp = Environment.GetEnvironmentVariable("TEMP");

// Write ascii pixel data to a gnuplot matrix data file
string gpDataFileName = id + ".splot_dat.ascii";
string gpDataFileFullPath = strDirTmp + @"\" + gpDataFileName;
File.Delete(gpDataFileFullPath); // deletes data file if it
already exists
System.IO.StreamWriter sw = new
System.IO.StreamWriter(gpDataFileFullPath);
TDLog.T_WriteLine("Writing {0}x{1} pixel data to gnuplot ascii
matrix data file '{2}'", width, height, gpDataFileFullPath);
string str = "# gnuplot surface plot data for id '" + id + "'";
sw.WriteLine(str);
for (int x = 0; x < width; x++)
{
str = "";
for (int y = 0; y < height; y++)
str += data[y * width + x].ToString() + " ";
sw.WriteLine(str);
}
sw.Close();

// Start pgnuplot
string strDirGP = @"C:\gnuplot\bin"; // TODO - should not be
hardcoded
string gpExeFileFullPath = strDirGP + @"\pgnuplot.exe";
ProcessStartInfo psi = new ProcessStartInfo(gpExeFileFullPath);
psi.RedirectStandardInput = true;
psi.UseShellExecute = false;
psi.CreateNoWindow = true;
psi.WindowStyle = ProcessWindowStyle.Hidden;

try
{
TDLog.T_WriteLine("Starting GNUPlot process '{0}'",
gpExeFileFullPath);
Process extPro = Process.Start(psi);

// Start a StreamWriter as a stdin pipe to pgnuplot
StreamWriter gpStWr = extPro.StandardInput;

// set plotting options
TDLog.T_WriteLine("Setting gnuplot plotstyle options");
gpStWr.WriteLine("reset");
gpStWr.WriteLine("title notitle");
gpStWr.WriteLine("set pm3d");
gpStWr.WriteLine("unset key");
gpStWr.WriteLine("set hidden3d");
gpStWr.WriteLine("set contour surface");
gpStWr.WriteLine("set dgrid 80 splines");
gpStWr.WriteLine("set view 60, 45, 1, 1.5");
gpStWr.WriteLine("unset border");
gpStWr.WriteLine("unset xtics");
gpStWr.WriteLine("unset ytics");
gpStWr.WriteLine("unset ztics");
gpStWr.WriteLine("unset colorbox");
gpStWr.WriteLine("set xyplane relative 0");
gpStWr.WriteLine("set terminal png enhanced transparent
truecolor");

// set the output file
string gpOutputFileFullPath = strDirTmp + "\\" + id +
".splot_out.png";
File.Delete(gpOutputFileFullPath); // deletes o/p file if it
already exists
gpStWr.WriteLine(@"set output '" + gpOutputFileFullPath
+"'");

// do the plot
TDLog.T_WriteLine("Plotting to file '{0}'",
gpOutputFileFullPath);
gpStWr.WriteLine(@"splot '" + gpDataFileFullPath + "' matrix
with lines");

// close gnuplot
gpStWr.WriteLine("quit");
gpStWr.Flush();

extPro.Close();
}
catch (Exception ex)
{
TDLog.T_DumpException(ex);
}

TDLog.T_WriteLine("Plot completed");